Kinetics vs. Thermodynamics

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Caitlin Mispagel 1D
Posts: 47
Joined: Tue Oct 10, 2017 7:13 am

Kinetics vs. Thermodynamics

Postby Caitlin Mispagel 1D » Sat Feb 24, 2018 10:32 pm

How do we know which controls the reaction if it is favorable in one aspect but not favorable in another (for example favorable thermodynamically but not kinetically)? Is this something we can calculate?

Sohini Halder 1G
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am
Been upvoted: 1 time

Re: Kinetics vs. Thermodynamics

Postby Sohini Halder 1G » Sat Feb 24, 2018 11:25 pm

As of right now, we only know about energy barriers causing this disparity between thermodynamically and kinetically favorable reactions. I'm assuming that once we know more about the actual mechanisms that go into the reactions, we can find out this.

Annalise Eder 2L
Posts: 49
Joined: Sat Jul 22, 2017 3:01 am

Re: Kinetics vs. Thermodynamics

Postby Annalise Eder 2L » Sun Feb 25, 2018 7:10 pm

The rate constant k, associated with kinetics, is related to the activation energy required for a reaction to occur and can tell you about the speed of a reaction and how quickly is reaches equilibrium. Thermodynamics is related to the free energy, ΔG, given off by a reaction and tells you about a reaction once it has already reached equilibrium. Kinetics is related to the reactivity while thermodynamics has more to do with stability.

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